-6061

Appears in sequences

• Expansion of Product_{m>=1} (1+q^m)^(-9).at n=9A022604
• Coefficient of x^n in Product_{k>=1} 1/(1+x^k)^n.at n=8A255526
• E.g.f.: C(x) = Sum_{n>=0} cos((2*n+1)*x) * x^n / (1 + x^(2*n+1)).at n=6A257453